Gas water heater draft hoods provide additional air for the combustion process gases, to be properly pulled out from the burner chamber (base of the water heater), into the water heater vent pipe and the chimney.
Mycelium is a block added in Minecraft the same time as the introduction of the Mushroom Biomes in Minecraft 1.9pre1. Mycelium can only be found and only can be found in Mushroom Biomes. Mycelium resembles dirt in that it can be broken with a shovel and it without a 'Silk Touch' enchanted tool it only drops dirt when broken. Mycelium also lets off a small particle effect the same as Bedrock.
Fungi can be found âeatingâ everything from soil and wood to live plants and live animals. The underground, vegetative part of fungi called the mycelium extracts nutrients from the matter. They do this in three ways: as saprophytes, as parasites, and as mutualistic organisms (including mycorrhizae). Although some species of fungi stick to one category, others will switch depending on their situation.